Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description must carry the behavioral disclosure burden. It only states 'List jobs' and gives no details about pagination, return format, job states, authentication requirements, or read-only guarantees. Listing implies a safe read operation, but the description adds no explicit behavioral context beyond that.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.